I'm not writing a sitcom, but can I give my thoughts?
Does a sitcom have to have a 'clever' title?
Think about it;
Father Ted
Frasier
Seinfeld
Blackadder
Just off the top of my head, titles which are merely the lead character in the sitcom but do the job. I remember Lee & Herring in their 'fist of fun' book doing a piss take of bad sitcom titles with two pages of sitcom titles all based on 'Bird in the Hand - Ian Bird is manager of the Hand pub' 'An R In The Month - Anne R is manager of the Month pub' 'Godd In Heaven - Ian Godd is manager of the Heaven Pub' 'There R More Things In Heaven and Earth Than Are Ever Dreamt of In Your Philosophy - Ian There R More Things etc. etc."